Mathematical model based on the radiosity method for estimating the efficiency of in-duct UVGI systems

The article describes a model for calculating the killing ratio of different pathogens with an in-duct ultraviolet (UV) device. The model is based on the radiosity method adapted for the UV radiation range and can be used for analyzing any lamp distribution. The paper provides the necessary view fac...

Full description

Saved in:
Bibliographic Details
Published in:HVAC&R research 2022-09, Vol.28 (9), p.1255-1269
Main Authors: Sarabia-Escriva, Emilio-José, Soto-Francés, Víctor-Manuel, Pinazo-Ojer, José-Manuel
Format: Article
Language:English
Subjects:
Environmental protection
Mathematical models
Radiosity
Severe acute respiratory syndrome coronavirus 2
Ultraviolet radiation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The article describes a model for calculating the killing ratio of different pathogens with an in-duct ultraviolet (UV) device. The model is based on the radiosity method adapted for the UV radiation range and can be used for analyzing any lamp distribution. The paper provides the necessary view factors and the influence of environmental variables (temperature, humidity and air velocity) in the analysis. The model has been validated using the results of four commercial equipment certificates issued by the US Environmental Protection Agency (EPA). The model results show a high precision on the test results, with a maximum deviation of 9%. In all cases, the model results are lower than that of the test, which allows being on the side of safety in the design. The model has been programmed in software used by Steril-Air for designing its equipment. Finally, an example of calculating the SARS-CoV-2 killing ratio with a 4 × 2 lamps arrangement is shown.
ISSN:2374-4731
2374-474X
DOI:10.1080/23744731.2022.2079897